W51300

W51300 FLASH VR CONTROLLER GENERAL DESCRIPTION The W51300 is a voice recorder IC which contains A/D and D/A converters to digitize and reproduce voice signals. An anti-alias/smoothing filter, AGC circuit, MIC preamplifier, and speaker power amplifier are used to smooth the input voice and set the output voice to a certain volume while minimizing the number of extra components needed. The recording time depends on the size of the external memory. The external memory is a nonvolatile flash EPROM that stores the voice data while power is switched off. This external memory provides a great advantage in cartridge or greeting card applications. A maximum of 16 Mbit of memory can be cascaded. In addition, the W51300's flexible segmentation, selective recording/erasing, forward and backward move functions, and MCU interface provide flexibility to meet the needs of a wide variety of applications. FEATURES Modified ADM algorithm with 24 KHz sampling frequency when ROSC = 620 KΩ Operates with Winbond serial flash EPROM Built-in A/D, D/A, MIC preamplifier, AGC circuit, anti-alias/smoothing filter, speaker power amplifier, and LED indicator 8 input trigger pins (L_REC, E_PLAY, L_PLAY, FWD, BWD, STOP, ERASE, RESET) debounced to ensure noise-free operations Single/multi-voice segment operation, normal/CPU mode selected by pin option (SMODE, CPU) Cascadable for longer duration by directly cascading serial flash EPROMs (maximum 16 Mbits) Maximum 63 voice segments available in mu...